New Delhi, July 23 - Signalling a recovery for Indian industry, the output of six core infrastructure sectors expanded 6.5 percent in June against 2.8 percent in the previous month, official data showed Thursday.

The six core infrastructures industries, comprising crude oil, refined petroleum fuels, coal, electricity, cement and finished steel, with a collective weight of 26.7 percent in the industrial production index, had grown by 5.1 percent in June last year.

Among them, coal output expanded the most this June with a growth of 14.7 percent, followed by 12.8 percent for cement, 7 percent for electricity, 5.3 percent for finished steel and 4.3 percent for crude.

The output of refined petroleum products, however, fell 3.7 percent.